1
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Han X, Zhao Q, Yan X, Meng T, He J. Blocking recombination centers by controlling the charge density of a sulfur vacancy in antimony trisulfide. Phys Chem Chem Phys 2023; 25:32622-32631. [PMID: 38009229 DOI: 10.1039/d3cp05217f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2023]
Abstract
By performing nonadiabatic molecular dynamics combined with ab initio time-domain density functional theory, we have explored the effects of the charge density of a sulfur vacancy on charge trapping and recombination in antimony trisulfide (Sb2S3). The simulations demonstrate that, compared to an antimony vacancy, the sulfur vacancy generates a high charge density trap state within the band gap. This state acts as the recombination center and provides new channels for charge carrier relaxation. Filling the sulfur vacancy with electron donors elevates the defect state to the Fermi level due to the introduced extra electrons. In contrast, the electron acceptor lowers the charge density of the sulfur vacancy by capturing its local electrons, eliminating the charge recombination center and extending the photo-generated charge carrier lifetime. Additionally, compared with electron injection, hole injection can also decrease the charge density of the trap state via neutralizing its local electronic states, eliminate the trap state within the band gap, and suppress nonradiative electron-hole recombination. This study is expected to shed new light on the blocking recombination centers and provide valuable insights into the design of high-performance solar cells.
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Affiliation(s)
- Xiao Han
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, P. R. China.
| | - Qi Zhao
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, P. R. China.
| | - Xiaodan Yan
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, P. R. China.
| | - Ting Meng
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, P. R. China.
| | - Jinlu He
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, P. R. China.
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2
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Giri A, Walton SG, Tomko J, Bhatt N, Johnson MJ, Boris DR, Lu G, Caldwell JD, Prezhdo OV, Hopkins PE. Ultrafast and Nanoscale Energy Transduction Mechanisms and Coupled Thermal Transport across Interfaces. ACS NANO 2023; 17:14253-14282. [PMID: 37459320 PMCID: PMC10416573 DOI: 10.1021/acsnano.3c02417] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 06/06/2023] [Indexed: 08/09/2023]
Abstract
The coupled interactions among the fundamental carriers of charge, heat, and electromagnetic fields at interfaces and boundaries give rise to energetic processes that enable a wide array of technologies. The energy transduction among these coupled carriers results in thermal dissipation at these surfaces, often quantified by the thermal boundary resistance, thus driving the functionalities of the modern nanotechnologies that are continuing to provide transformational benefits in computing, communication, health care, clean energy, power recycling, sensing, and manufacturing, to name a few. It is the purpose of this Review to summarize recent works that have been reported on ultrafast and nanoscale energy transduction and heat transfer mechanisms across interfaces when different thermal carriers couple near or across interfaces. We review coupled heat transfer mechanisms at interfaces of solids, liquids, gasses, and plasmas that drive the resulting interfacial heat transfer and temperature gradients due to energy and momentum coupling among various combinations of electrons, vibrons, photons, polaritons (plasmon polaritons and phonon polaritons), and molecules. These interfacial thermal transport processes with coupled energy carriers involve relatively recent research, and thus, several opportunities exist to further develop these nascent fields, which we comment on throughout the course of this Review.
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Affiliation(s)
- Ashutosh Giri
- Department
of Mechanical, Industrial and Systems Engineering, University of Rhode Island, Kingston, Rhode Island 02881, United States
| | - Scott G. Walton
- Plasma
Physics Division, Naval Research Laboratory, Washington, DC 22032, United States
| | - John Tomko
- Department
of Mechanical and Aerospace Engineering, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Niraj Bhatt
- Department
of Mechanical, Industrial and Systems Engineering, University of Rhode Island, Kingston, Rhode Island 02881, United States
| | - Michael J. Johnson
- Plasma
Physics Division, Naval Research Laboratory, Washington, DC 22032, United States
| | - David R. Boris
- Plasma
Physics Division, Naval Research Laboratory, Washington, DC 22032, United States
| | - Guanyu Lu
- Department
of Mechanical Engineering, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Joshua D. Caldwell
- Department
of Mechanical Engineering, Vanderbilt University, Nashville, Tennessee 37235, United States
- Interdisciplinary
Materials Science, Vanderbilt University, Nashville, Tennessee 37235, United States
- Vanderbilt
Institute of Nanoscale Science and Engineering, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Oleg V. Prezhdo
- Department
of Chemistry, University of Southern California, Los Angeles, California 90089, United States
- Department
of Physics and Astronomy, University of
Southern California, Los Angeles, California 90089, United States
| | - Patrick E. Hopkins
- Department
of Mechanical and Aerospace Engineering, University of Virginia, Charlottesville, Virginia 22904, United States
- Department
of Materials Science and Engineering, University
of Virginia, Charlottesville, Virginia 22904, United States
- Department
of Physics, University of Virginia, Charlottesville, Virginia 22904, United States
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3
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Wenderich K, Zhu K, Bu Y, Tichelaar FD, Mul G, Huijser A. Photophysical Characterization of Ru Nanoclusters on Nanostructured TiO 2 by Time-Resolved Photoluminescence Spectroscopy. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2023; 127:14353-14362. [PMID: 37529662 PMCID: PMC10388344 DOI: 10.1021/acs.jpcc.3c04075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 06/23/2023] [Indexed: 08/03/2023]
Abstract
Despite the promising performance of Ru nanoparticles or nanoclusters on nanostructured TiO2 in photocatalytic and photothermal reactions, a mechanistic understanding of the photophysics is limited. The aim of this study is to uncover the nature of light-induced processes in Ru/TiO2 and the role of UV versus visible excitation by time-resolved photoluminescence (PL) spectroscopy. The PL at a 267 nm excitation is predominantly due to TiO2, with a minor contribution of the Ru nanoclusters. Relative to TiO2, the PL of Ru/TiO2 following a 267 nm excitation is significantly blue-shifted, and the bathochromic shift with time is smaller. We show by global analysis of the spectrotemporal PL behavior that for both TiO2 and Ru/TiO2 the bathochromic shift with time is likely caused by the diffusion of electrons from the TiO2 bulk toward the surface. During this directional motion, electrons may recombine (non)radiatively with relatively immobile hole polarons, causing the PL spectrum to red-shift with time following excitation. The blue-shifted PL spectra and smaller bathochromic shift with time for Ru/TiO2 relative to TiO2 indicate surface PL quenching, likely due to charge transfer from the TiO2 surface into the Ru nanoclusters. When deposited on SiO2 and excited at 532 nm, Ru shows a strong emission. The PL of Ru when deposited on TiO2 is completely quenched, demonstrating interfacial charge separation following photoexcitation of the Ru nanoclusters with a close to unity quantum yield. The nature of the charge-transfer phenomena is discussed, and the obtained insights indicate that Ru nanoclusters should be deposited on semiconducting supports to enable highly effective photo(thermal)catalysis.
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Affiliation(s)
- Kasper Wenderich
- Photocatalytic
Synthesis Group, Faculty of Science and Technology, MESA+ Institute
for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - Kaijian Zhu
- Photocatalytic
Synthesis Group, Faculty of Science and Technology, MESA+ Institute
for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - Yibin Bu
- Nanolab,
MESA+ Institute for Nanotechnology, University
of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - Frans D. Tichelaar
- Kavli
Institute of Technology, Quantum Nanoscience, Delft University of Technology, 2628 CJ Delft, The Netherlands
| | - Guido Mul
- Photocatalytic
Synthesis Group, Faculty of Science and Technology, MESA+ Institute
for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - Annemarie Huijser
- Photocatalytic
Synthesis Group, Faculty of Science and Technology, MESA+ Institute
for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
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4
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Li W, Xue T, Mora-Perez C, Prezhdo OV. Ab initio quantum dynamics of plasmonic charge carriers. TRENDS IN CHEMISTRY 2023. [DOI: 10.1016/j.trechm.2023.02.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
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5
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Allès M, Remesal ER, Illas F, Morales‐García Á. Structural and Electronic Properties of Metal/Oxide Nanostructures from First‐Principles: Ru
13
Supported on (TiO
2
)
84
as a Case Study. ADVANCED THEORY AND SIMULATIONS 2022. [DOI: 10.1002/adts.202200670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Miquel Allès
- Departament de Ciència de Materials i Química Física & Institut de Química Teòrica i Computacional (IQTCUB) Universitat de Barcelona c/Martí i Franquès 1‐11 Barcelona 08028 Spain
| | - Elena R. Remesal
- Departament de Ciència de Materials i Química Física & Institut de Química Teòrica i Computacional (IQTCUB) Universitat de Barcelona c/Martí i Franquès 1‐11 Barcelona 08028 Spain
| | - Francesc Illas
- Departament de Ciència de Materials i Química Física & Institut de Química Teòrica i Computacional (IQTCUB) Universitat de Barcelona c/Martí i Franquès 1‐11 Barcelona 08028 Spain
| | - Ángel Morales‐García
- Departament de Ciència de Materials i Química Física & Institut de Química Teòrica i Computacional (IQTCUB) Universitat de Barcelona c/Martí i Franquès 1‐11 Barcelona 08028 Spain
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6
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Clabaut P, Beisert M, Michel C, Steinmann SN. Beyond single-crystal surfaces: The GAL21 water/metal force field. J Chem Phys 2022; 157:194705. [DOI: 10.1063/5.0130368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Solvent effects are notoriously difficult to describe for metallic nanoparticles (NPs). Here, we introduce GAL21 which is the first pairwise additive force field that is specifically designed to modulate the near chemisorption energy of water as a function of the coordination numbers of the metallic atoms. We find a quadratic dependence to be most suitable for capturing the dependence of the adsorption energy of water on the generalized coordination number (GCN) of the metal atoms. GAL21 has been fitted against DFT adsorption energies for Cu, Ag, Au, Ni, Pd, Pt, and Co on 500 configurations and validated on about 3000 configurations for each metal, constructed on five surfaces with GCNs varying from 2.5 to 11.25. Depending on the metals, the root mean square deviation is found between 0.7 kcal mol−1 (Au) to 1.6 kcal mol−1 (Ni). Using GAL21, as implemented in the open-source code CP2K, we then evaluate the solvation energy of Au55 and Pt55 NPs in water using thermodynamic integration. The solvation free energy is found to be larger for Pt than for Au and systematically larger than 200 kcal mol−1, demonstrating the large impact of solvent on the surface energetics of NPs. Still, given that the amorphous NPs are both, the most stable and the most solvated ones, we do not predict a change in the preferred morphology between the gas-phase and in water. Finally, based on a linear regression on three sizes of NPs (from 38 to 147), the solvation energy for Au and Pt surface atoms is found to be −5.2 and −9.9 kcal mol−1, respectively.
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Affiliation(s)
- Paul Clabaut
- Ecole Normale Supérieure de Lyon, CNRS, Laboratoire de Chimie UMR 5182, 46 allée d’Italie, F-69364 Lyon, France
| | - Matthieu Beisert
- Ecole Normale Supérieure de Lyon, CNRS, Laboratoire de Chimie UMR 5182, 46 allée d’Italie, F-69364 Lyon, France
| | - Carine Michel
- Ecole Normale Supérieure de Lyon, CNRS, Laboratoire de Chimie UMR 5182, 46 allée d’Italie, F-69364 Lyon, France
| | - Stephan N. Steinmann
- Ecole Normale Supérieure de Lyon, CNRS, Laboratoire de Chimie UMR 5182, 46 allée d’Italie, F-69364 Lyon, France
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7
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He J, Fang WH, Long R. Unravelling the effects of oxidation state of interstitial iodine and oxygen passivation on charge trapping and recombination in CH 3NH 3PbI 3 perovskite: a time-domain ab initio study. Chem Sci 2019; 10:10079-10088. [PMID: 32055362 PMCID: PMC6991187 DOI: 10.1039/c9sc02353d] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Accepted: 09/08/2019] [Indexed: 11/21/2022] Open
Abstract
Understanding nonradiative charge recombination mechanisms is a prerequisite for advancing perovskite solar cells. By performing time-domain density functional theory combined with nonadiabatic (NA) molecular dynamics simulations, we show that electron-hole recombination in perovskites strongly depends on the oxidation state of interstitial iodine and oxygen passivation. The simulations demonstrate that electron-hole recombination in CH3NH3PbI3 occurs within several nanoseconds, agreeing well with experiment. The negative interstitial iodine delays charge recombination by a factor of 1.3. The deceleration is attributed to the fact that interstitial iodine anion forms a chemical bond with its nearest lead atoms, eliminates the trap state, and decreases the NA electron-phonon coupling. The positive interstitial iodine attracts its neighbouring lattice iodine anions, resulting in the formation of an I-trimer and producing an electron trap. Electron trapping proceeds on a very fast timescale, tens of picoseconds, and captures the majority of free electrons available to directly recombine with free holes while inhibiting the recombination of free electrons and holes, delaying the recombination by a factor of 1.5. However, the positive interstitial iodine easily converts to a neutral iodine defect by capturing an electron, giving rise to a singly occupied state above the valence band maximum and acting as a hole trap. The photoexcitation valence band hole becomes trapped by the hole trap state very rapidly, followed by acceleration of recombination with the conduction band free electron by a factor of 1.6. Surprisingly, molecular oxygen interacting with interstitial iodine anion forms a stable IO3 -1 species, which inhibits ion migration, stabilizes perovskites, and suppresses the electron-hole recombination by a factor of 2.7. Our simulations reveal the microscopic effects of the oxidation state of interstitial iodine defects and oxygen passivation in perovskites, suggesting an effective way to improve perovskite photovoltaic and optoelectronic devices.
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Affiliation(s)
- Jinlu He
- College of Chemistry , Key Laboratory of Theoretical & Computational Photochemistry of Ministry of Education , Beijing Normal University , Beijing , 100875 , P. R. China .
| | - Wei-Hai Fang
- College of Chemistry , Key Laboratory of Theoretical & Computational Photochemistry of Ministry of Education , Beijing Normal University , Beijing , 100875 , P. R. China .
| | - Run Long
- College of Chemistry , Key Laboratory of Theoretical & Computational Photochemistry of Ministry of Education , Beijing Normal University , Beijing , 100875 , P. R. China .
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8
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Zhou X, Dong H. A Theoretical Perspective on Charge Separation and Transfer in Metal Oxide Photocatalysts for Water Splitting. ChemCatChem 2019. [DOI: 10.1002/cctc.201900567] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Xin Zhou
- College of Environment and Chemical EngineeringDalian University No. 10 Xuefu Street Dalian Economic Technological Development Zone Dalian 116622, Liaoning P.R. China
| | - Hao Dong
- School of Chemistry and Chemical EngineeringLiaoning Normal University No. 850 Huanghe Road Shahekou District Dalian 116029, Liaoning P.R. China
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9
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Fatima, Vogel DJ, Han Y, Inerbaev TM, Oncel N, Kilin DS. First-principles study of electron dynamics with explicit treatment of momentum dispersion on Si nanowires along different directions. Mol Phys 2018. [DOI: 10.1080/00268976.2018.1538624] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Fatima
- Department of Physics & Astrophysics, University of North Dakota, Grand Forks, ND, USA
| | - Dayton J. Vogel
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, ND, USA
| | - Yulun Han
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, ND, USA
| | - Talgat M. Inerbaev
- Faculty of Physics and Technical Sciences, L.N. Gumilyov Eurasian National University, Astana, Kazakhstan
| | - Nuri Oncel
- Department of Physics & Astrophysics, University of North Dakota, Grand Forks, ND, USA
| | - Dmitri S. Kilin
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, ND, USA
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10
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Han Y, Meng Q, Rasulev B, May PS, Berry MT, Kilin DS. Photoinduced Charge Transfer versus Fragmentation Pathways in Lanthanum Cyclopentadienyl Complexes. J Chem Theory Comput 2017. [DOI: 10.1021/acs.jctc.7b00050] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Yulun Han
- Department
of Chemistry, University of South Dakota, Vermillion, South Dakota 57069, United States
- Department
of Chemistry and Biochemistry, North Dakota State University, Fargo, North Dakota 58108, United States
| | - Qingguo Meng
- Shenyang
Institute of Automation, Guangzhou, Chinese Academy of Sciences, Guangzhou 511458, China
| | - Bakhtiyor Rasulev
- Center
for Computationally Assisted Science and Technology, North Dakota State University, Fargo, North Dakota 58102, United States
- Department of Coatings and Polymeric Materials, North Dakota State University, Fargo, North Dakota 58102, United States
| | - P. Stanley May
- Department
of Chemistry, University of South Dakota, Vermillion, South Dakota 57069, United States
| | - Mary T. Berry
- Department
of Chemistry, University of South Dakota, Vermillion, South Dakota 57069, United States
| | - Dmitri S. Kilin
- Department
of Chemistry, University of South Dakota, Vermillion, South Dakota 57069, United States
- Department
of Chemistry and Biochemistry, North Dakota State University, Fargo, North Dakota 58108, United States
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11
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Dynamics of charge at water-to-semiconductor interface: Case study of wet [0 0 1] anatase TiO2 nanowire. Chem Phys 2016. [DOI: 10.1016/j.chemphys.2016.08.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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12
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Ranasingha O, Wang H, Zobač V, Jelínek P, Panapitiya G, Neukirch AJ, Prezhdo OV, Lewis JP. Slow Relaxation of Surface Plasmon Excitations in Au55: The Key to Efficient Plasmonic Heating in Au/TiO2. J Phys Chem Lett 2016; 7:1563-1569. [PMID: 27043706 DOI: 10.1021/acs.jpclett.6b00283] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Gold nanoparticles distinguish themselves from other nanoparticles due to their unique surface plasmon resonance properties that can be exploited for a multiplicity of applications. The promise of plasmonic heating in systems of Au nanoparticles on transition metal oxide supports, for example, Au/TiO2, rests with the ability of the surface plasmon in Au nanoparticles to effectively transfer energy into the transition metal oxide. Here, we report a critical observation regarding Au nanoparticle (Au55) surface plasmon excitations, that is, the relaxation of the surface plasmon excitation is very slow, on the order of several picoseconds. Starting from five plasmon states in Au55 nanoparticles using nonadiabatic molecular dynamics simulations, we find that the relaxation time constant resulting from these simulations is ∼6.8 ps, mainly resulting from a long-lived intermediate state found at around -0.8 eV. This long-lived intermediate state aligns with the conduction band edge of TiO2, thereby facilitating energy transfer injection from the Au55 nanoparticle into the TiO2. The current results rule out the previously reported molecular-like relaxation dynamics for Au55.
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Affiliation(s)
- Oshadha Ranasingha
- Department of Physics and Astronomy, West Virginia University , Morgantown, West Virginia 26506-6315, United States
| | - Hong Wang
- Department of Physics and Astronomy, West Virginia University , Morgantown, West Virginia 26506-6315, United States
| | - Vladimír Zobač
- Institute of Physics, Academy of Sciences of the Czech Republic , Cukrovarnicḱa 10, CZ-16200 Prague, Czech Republic
- Department of Physical Electronics, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague , CZ-16200 Prague, Czech Republic
| | - Pavel Jelínek
- Institute of Physics, Academy of Sciences of the Czech Republic , Cukrovarnicḱa 10, CZ-16200 Prague, Czech Republic
| | - Gihan Panapitiya
- Department of Physics and Astronomy, West Virginia University , Morgantown, West Virginia 26506-6315, United States
| | - Amanda J Neukirch
- Department of Physics and Astronomy, University of Rochester , Rochester, New York 14627, United States
| | - Oleg V Prezhdo
- Department of Physics and Astronomy, University of Rochester , Rochester, New York 14627, United States
- Department of Chemistry, University of Southern California , Los Angeles, California 90089-1062, United States
| | - James P Lewis
- Department of Physics and Astronomy, West Virginia University , Morgantown, West Virginia 26506-6315, United States
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13
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Rashwan K, Sereda G, Kilin D. Adsorption patterns of caffeic acid on titania: affinity, charge transfer and sunscreen applications. Mol Phys 2015. [DOI: 10.1080/00268976.2015.1104392] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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14
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Han Y, Meng Q, Rasulev B, May PS, Berry MT, Kilin DS. Photofragmentation of the Gas-Phase Lanthanum Isopropylcyclopentadienyl Complex: Computational Modeling vs Experiment. J Phys Chem A 2015; 119:10838-48. [DOI: 10.1021/acs.jpca.5b07209] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yulun Han
- Department
of Chemistry, University of South Dakota, Vermillion, South Dakota 57069, United States
| | - Qingguo Meng
- Shenyang
Institute of Automation, Guangzhou, Chinese Academy of Sciences, Guangzhou 511458, China
| | - Bakhtiyor Rasulev
- Center
for Computationally Assisted Science and Technology, North Dakota State University, Fargo, North Dakota 58102, United States
| | - P. Stanley May
- Department
of Chemistry, University of South Dakota, Vermillion, South Dakota 57069, United States
| | - Mary T. Berry
- Department
of Chemistry, University of South Dakota, Vermillion, South Dakota 57069, United States
| | - Dmitri S. Kilin
- Department
of Chemistry, University of South Dakota, Vermillion, South Dakota 57069, United States
- Department
of Chemistry and Biochemistry, North Dakota State University, Fargo, North Dakota 58108, United States
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15
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Kilina S, Kilin D, Tretiak S. Light-Driven and Phonon-Assisted Dynamics in Organic and Semiconductor Nanostructures. Chem Rev 2015; 115:5929-78. [DOI: 10.1021/acs.chemrev.5b00012] [Citation(s) in RCA: 140] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Svetlana Kilina
- Chemistry
and Biochemistry Department, North Dakota State University, Fargo, North Dakota 5810, United States
| | - Dmitri Kilin
- Department
of Chemistry, University of South Dakota, Vermillion, South Dakota 57069, United States
| | - Sergei Tretiak
- Theoretical
Division, Center for Nonlinear Studies (CNLS) and Center for Integrated
Nanotechnologies (CINT), Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
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16
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Jensen S, Kilin DS. Electronic properties of nickel-doped TiO₂ anatase. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2015; 27:134207. [PMID: 25767110 DOI: 10.1088/0953-8984/27/13/134207] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Atomistic details of electron transfer in semiconductor materials are characterized for TiO2 thin film surfaces doped with nickel. A periodic slab model of eight atomic layers exposes the (1 0 0) crystallographic surface and is covered with a monolayer of water. The density of states, absorption spectra, partial charge densities, molecular dynamics, and non-adiabatic couplings are compared between doped and undoped models. Our results show that Ni doping improves several electronic properties including lowering the band gap, increasing visible light absorption, and shortening the relaxation time of holes rather than electrons, which maximizes charge separation. The different mechanisms of electron and hole dynamics are discussed. The computed characteristics of a doped semiconductor material have practical potential for increasing efficiency of a photo-electrochemical cells.
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17
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18
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Huang S, Kilin DS. Charge Transfer, Luminescence, and Phonon Bottleneck in TiO2 Nanowires Computed by Eigenvectors of Liouville Superoperator. J Chem Theory Comput 2014; 10:3996-4005. [DOI: 10.1021/ct5004093] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Shuping Huang
- Department of Chemistry, University of South Dakota, Vermillion, South Dakota 57069, United States
| | - Dmitri S. Kilin
- Department of Chemistry, University of South Dakota, Vermillion, South Dakota 57069, United States
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